Pulumi enables the management of infrastructure as software, incorporating sophisticated programming languages, testing, and CI/CD practices akin to application development, and this includes applying feature flagging to infrastructure. Feature flags, commonly used in software to manage changes and mitigate risks, can also be leveraged in infrastructure to control rollout and accelerate development. The text discusses using Pulumi in conjunction with various tools like LaunchDarkly, Terraform, and ESC to create and manage flags, allowing for dynamic infrastructure adjustments without redeployment. Pulumi supports defining flags alongside infrastructure code, integrating with external providers like LaunchDarkly for advanced flagging features, and automating infrastructure updates through webhooks for continuous delivery. The choice between using Pulumi's ESC for straightforward configuration or integrating with LaunchDarkly for more advanced features depends on the team's needs and existing toolsets. This approach aligns infrastructure management with modern software development practices, ensuring flexibility and control in deployment processes.